We recently changed the SMTP Service's fully qualified domain name from server.domain.com to a mailservername.domain.com for an offsite server. Now our ASPEmail gets connection timed out and with CDO.Message there is no error displayed, but the user never receives a message. Once we switched the fully qualified domain name, the email script returns an error of 'connection timed out'.
In IIS it says the mailservername.domain.com was resolved successfully. What else could be my problem?
Whatever name you're using, you should be able to telnet to port 25 of that address. If you aren't able to then it means either the address is wrong (using wrong name, DNS entries invalid, etc), or there
One of the most often confused topics in the area DNS is the idea of GLUE records. Specifically, what they are, when they are needed, when they are provided, and how they are created.
First, WHAT IS GLUE?
To understand GLUE, you must first under…